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    STEEL MATERIAL WITH EXCELLENT CRASHWORTHINESS AND MANUFACTURING PROCESS THEREFOR
    5.
    发明公开
    STEEL MATERIAL WITH EXCELLENT CRASHWORTHINESS AND MANUFACTURING PROCESS THEREFOR 审中-公开
    HERMTELLUNGSVERFAHRENDAFÜR的STAHLMATERIAL MIT AUSGEZEICHNETER BRUCHFESTIGKEIT

    公开(公告)号：EP2787098A4

    公开(公告)日：2015-11-18

    申请号：EP12853662

    申请日：2012-06-14

    申请人： JFE STEEL CORP

    发明人： SUWA MINORU ,  NAKATA NAOKI ,  NAKASHIMA KOICHI

    IPC分类号： C22C38/00 ,  C21D8/02 ,  C22C38/06 ,  C22C38/58

    CPC分类号： C22C38/06 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0263 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16

    摘要： A steel with excellent collision energy absorbability and a method for manufacturing the same are provided, wherein the energy absorbability of a collision can be enhanced. A steel with excellent collision energy absorbability, characterized in that the steel composition satisfies Ceq ‰¤ 0.36%, the structure includes a ferritic phase and a hard phase, the volume fraction of the above-described ferritic phase is 75% or more in the whole plate thickness, the hardness thereof is Hv 140 or more and 160 or less, and the average grain size thereof is 2 µm or more.

    摘要翻译： 提供了具有优异的碰撞能量吸收性的钢及其制造方法，其中可以提高碰撞的能量吸收性。 具有优异的碰撞能量吸收性的钢，其特征在于钢组成满足Ceq‰0.36％，其结构包括铁素体相和硬相，上述铁素体相的体积分数在整体上为75％以上 板厚，其硬度为Hv 140以上且160以下，其平均粒径为2μm以上。

    HOT ROLLING FACILITY OF STEEL PLATE AND HOT ROLLING METHOD
    7.
    发明公开
    HOT ROLLING FACILITY OF STEEL PLATE AND HOT ROLLING METHOD 有权
    钢热轧厂和热轧工艺

    公开(公告)号：EP1935521A4

    公开(公告)日：2011-05-11

    申请号：EP06783166

    申请日：2006-08-29

    申请人： JFE STEEL CORP

    发明人： NAKATA NAOKI ,  KUROKI TAKASHI ,  FUJIBAYASHI AKIO ,  TOMITA SHOGO

    IPC分类号： B21B45/02

    CPC分类号： B21B45/0218

    摘要： A hot rolling mill for a steel plate or sheet, which is superior in terms of equipment cost, equipment maintainability, and cooling performance and is capable of efficiently manufacturing a steel plate or sheet having good characteristics by appropriately controlling the temperature of a rolling material; and a method for hot rolling a steel plates or sheet are provided. Specifically, cooling equipment 20 for supplying cooling water onto a top surface and a bottom surface of a steel plate or sheet 10 that is being conveyed is provided at a position near an entrance side and an exit side of a hot rolling mill 12. The cooling equipment 20 includes an upper header 21 having upper nozzles 22 for jetting rod-like water flows 23 onto the top surface of the steel plate or sheet 10 at an angle of depression ¸ U in the range of 30° to 60°, which is positioned such that remaining cooling water 24 supplied to the steel plate or sheet is retained by work rolls 12a. The cooling equipment 20 further includes a lower header 31 having lower nozzles 32 for jetting rod-like water flows 33 onto the bottom surface of the steel plate or sheet 10 at an angle of elevation in the range of 45° to 90°, which is positioned between the work rolls 12a and a table roller adjacent thereto.

    METHOD FOR MANUFACTURING HOT-ROLLED STEEL SHEET, STEEL SHEET CUTTING LOCATION SETTING DEVICE, STEEL SHEET CUTTING LOCATION SETTING METHOD, AND STEEL SHEET MANUFACTURING METHOD
    8.
    发明公开
    METHOD FOR MANUFACTURING HOT-ROLLED STEEL SHEET, STEEL SHEET CUTTING LOCATION SETTING DEVICE, STEEL SHEET CUTTING LOCATION SETTING METHOD, AND STEEL SHEET MANUFACTURING METHOD 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON WARMGEWALZTEM STAHLBLECH，STAHLBLECHSCHNEIDSTELLENEINSTELLVORRICHTUNG，STAHLBLECHSCHNEIDSTELLENEINSTELLVERFAHREN UND STAHLBLECHHERSTELLUNGSVERFAHREN

    公开(公告)号：EP3150290A4

    公开(公告)日：2017-09-27

    申请号：EP15800491

    申请日：2015-05-13

    申请人： JFE STEEL CORP

    发明人： GOTO HIROTO ,  NAKATA NAOKI ,  KIMURA YUKIO ,  MIYAKE MASARU ,  UEOKA SATOSHI ,  NISHIURA NOBUO ,  SHIRASAKI SONOMI ,  KATO TAKAOMI

    IPC分类号： B21B15/00 ,  B21B1/22 ,  B21B1/26

    CPC分类号： B21B15/0007 ,  B21B1/22 ,  B21B1/224 ,  B21B1/26 ,  B21B1/34 ,  B21B1/38 ,  B21B38/00 ,  B21B38/006 ,  B21B2001/225 ,  B21B2015/0014 ,  B21B2263/20

    摘要： There is provided a method for manufacturing a hot-rolled steel sheet having a large thickness and a large width, in which a steel sheet having a larger sheet thickness, a larger sheet width and a lower temperature can stably be cut at a cutting load equal to that of a conventional steel sheet having a usual sheet thickness, a usual sheet width and a usual temperature. In a rough rolling step, a shape of a crop portion formed at a front end of the steel sheet in a conveying direction is adjusted into a fishtail shape by width rolling of a width rolling machine and horizontal rolling of a horizontal rough rolling machine, the steel sheet is formed so that the shortest length L (mm) from a concave portion bottom to a convex portion top of the fishtail shape satisfies Equation (1) mentioned below, and an intermediate portion between the concave portion bottom and the convex portion top, defined as a desired cutting location, is cut: 2 X + 30 ‰¤ L ‰¤ 300 in which X is a maximum deviation (mm) of the cutting location of a crop cutting machine and 0 ‰¤ X ‰¤ 90.

    摘要翻译： 本发明提供一种厚度大且宽度大的热轧钢板的制造方法，能够在切削载荷相等的情况下稳定地切断板厚大，板宽，温度低的钢板 与具有通常片材厚度，常用片材宽度和常用温度的常规钢片相当。 在粗轧工序中，通过宽度轧制机的宽度轧制和水平粗轧机的横向轧制，将在钢板的输送方向前端形成的裁切部的形状调整为鱼尾形， 钢板形成为从鱼尾形状的凹部底部到凸部顶部的最短长度L（mm）满足下述式（1）以及凹部底部和凸部顶部之间的中间部， 定义为期望的切割位置，被切割：2X + 30‰L≤300，其中X是作物切割机的切割位置的最大偏差（mm）和0‰X 90。